-56.07% is the change from 915 to 402
Calculation steps:
[( 402 - 915 ) ÷ 915] x 100 = -56.07%
Formula
Percentage change = [(402 - 915) / 915] x 100
Subtract the new number by the original number
402 - 915 = -513
-513 ÷ 915 = -0.5606557377049181
-0.5606557377049181 x 100 = -56.07%